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GtkCssProvider: Improve error handling and reporting.
Nicer error reports are provided, and a GError can be spread from anywhere in parsing, so over time more precise and meaningful messages can be produced.
This commit is contained in:
Carlos Garnacho
parent
06d8676354
commit
0cba2dc726
@ -739,6 +739,9 @@ struct GtkCssProviderPrivate
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GScanner *scanner;
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gchar *filename;
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const gchar *buffer;
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const gchar *value_pos;
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GHashTable *symbolic_colors;
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GPtrArray *selectors_info;
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@ -781,12 +784,17 @@ static void scanner_apply_scope (GScanner *scanner,
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ParserScope scope);
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static gboolean css_provider_parse_value (GtkCssProvider *css_provider,
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const gchar *value_str,
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GValue *value);
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GValue *value,
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GError **error);
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static gboolean gtk_css_provider_load_from_path_internal (GtkCssProvider *css_provider,
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const gchar *path,
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gboolean reset,
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GError **error);
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enum {
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CSS_PROVIDER_PARSE_ERROR
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};
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GQuark
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gtk_css_provider_error_quark (void)
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@ -1374,7 +1382,7 @@ gtk_css_provider_get_style_property (GtkStyleProvider *provider,
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val_str = g_value_get_string (val);
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found = TRUE;
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css_provider_parse_value (GTK_CSS_PROVIDER (provider), val_str, value);
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css_provider_parse_value (GTK_CSS_PROVIDER (provider), val_str, value, NULL);
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break;
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}
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}
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@ -1521,6 +1529,8 @@ css_provider_reset_parser (GtkCssProvider *css_provider)
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priv->state = NULL;
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scanner_apply_scope (priv->scanner, SCOPE_SELECTOR);
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priv->scanner->user_data = NULL;
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priv->value_pos = NULL;
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g_slist_foreach (priv->cur_selectors, (GFunc) selector_path_unref, NULL);
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g_slist_free (priv->cur_selectors);
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@ -2121,7 +2131,8 @@ symbolic_color_parse_str (const gchar *string,
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}
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static GtkSymbolicColor *
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symbolic_color_parse (const gchar *str)
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symbolic_color_parse (const gchar *str,
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GError **error)
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{
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GtkSymbolicColor *color;
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gchar *end;
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@ -2130,8 +2141,10 @@ symbolic_color_parse (const gchar *str)
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if (*end != '\0')
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{
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g_message ("Error parsing symbolic color \"%s\", stopped at char %ld : '%c'",
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str, end - str, *end);
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g_set_error_literal (error,
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gtk_css_provider_error_quark (),
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CSS_PROVIDER_PARSE_ERROR,
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"Could not parse symbolic color");
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if (color)
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{
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@ -2217,6 +2230,13 @@ gradient_parse_str (const gchar *str,
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else
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{
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coords[i * 3] = g_ascii_strtod (str, &end);
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if (str == end)
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{
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*end_ptr = (gchar *) str;
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return NULL;
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}
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str = end;
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}
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@ -2240,6 +2260,13 @@ gradient_parse_str (const gchar *str,
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else
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{
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coords[(i * 3) + 1] = g_ascii_strtod (str, &end);
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if (str == end)
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{
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*end_ptr = (gchar *) str;
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return NULL;
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}
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str = end;
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}
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@ -2377,33 +2404,11 @@ gradient_parse_str (const gchar *str,
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return gradient;
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}
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static GtkGradient *
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gradient_parse (const gchar *str)
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{
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GtkGradient *gradient;
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gchar *end;
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gradient = gradient_parse_str (str, &end);
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if (*end != '\0')
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{
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g_message ("Error parsing pattern \"%s\", stopped at char %ld : '%c'",
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str, end - str, *end);
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if (gradient)
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{
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gtk_gradient_unref (gradient);
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gradient = NULL;
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}
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}
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return gradient;
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}
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static gchar *
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path_parse_str (GtkCssProvider *css_provider,
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const gchar *str,
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gchar **end_ptr)
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gchar **end_ptr,
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GError **error)
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{
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gchar *path, *chr;
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const gchar *start, *end;
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@ -2488,7 +2493,8 @@ path_parse_str (GtkCssProvider *css_provider,
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if (!g_file_test (path, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR))
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{
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g_warning ("File doesn't exist: %s\n", path);
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g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_EXIST,
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"File doesn't exist: %s", path);
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g_free (path);
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path = NULL;
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*end_ptr = (gchar *)start;
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@ -2499,24 +2505,26 @@ path_parse_str (GtkCssProvider *css_provider,
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static gchar *
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path_parse (GtkCssProvider *css_provider,
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const gchar *str)
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const gchar *str,
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GError **error)
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{
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gchar *path;
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gchar *end;
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path = path_parse_str (css_provider, str, &end);
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path = path_parse_str (css_provider, str, &end, error);
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if (!path)
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return NULL;
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if (*end != '\0')
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{
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g_message ("Error parsing file path \"%s\", stopped at char %ld : '%c'",
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str, end - str, *end);
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if (path)
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{
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g_set_error_literal (error,
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gtk_css_provider_error_quark (),
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CSS_PROVIDER_PARSE_ERROR,
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"Error parsing path");
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g_free (path);
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path = NULL;
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}
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}
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return path;
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}
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@ -2524,12 +2532,12 @@ path_parse (GtkCssProvider *css_provider,
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static Gtk9Slice *
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slice_parse_str (GtkCssProvider *css_provider,
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const gchar *str,
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gchar **end_ptr)
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gchar **end_ptr,
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GError **error)
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{
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gdouble distance_top, distance_bottom;
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gdouble distance_left, distance_right;
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GtkSliceSideModifier mods[2];
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GError *error = NULL;
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GdkPixbuf *pixbuf;
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Gtk9Slice *slice;
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gchar *path;
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@ -2538,7 +2546,7 @@ slice_parse_str (GtkCssProvider *css_provider,
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SKIP_SPACES (str);
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/* Parse image url */
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path = path_parse_str (css_provider, str, end_ptr);
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path = path_parse_str (css_provider, str, end_ptr, error);
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if (!path)
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return NULL;
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@ -2604,13 +2612,11 @@ slice_parse_str (GtkCssProvider *css_provider,
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mods[1] = mods[0];
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}
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pixbuf = gdk_pixbuf_new_from_file (path, &error);
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pixbuf = gdk_pixbuf_new_from_file (path, error);
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g_free (path);
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if (error)
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if (!pixbuf)
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{
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g_warning ("Pixbuf could not be loaded: %s\n", error->message);
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g_error_free (error);
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*end_ptr = (gchar *) str;
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return NULL;
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}
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@ -2624,30 +2630,6 @@ slice_parse_str (GtkCssProvider *css_provider,
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return slice;
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}
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static Gtk9Slice *
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slice_parse (GtkCssProvider *css_provider,
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const gchar *str)
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{
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Gtk9Slice *slice;
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gchar *end;
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slice = slice_parse_str (css_provider, str, &end);
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if (*end != '\0')
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{
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g_message ("Error parsing sliced image \"%s\", stopped at char %ld : '%c'",
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str, end - str, *end);
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if (slice)
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{
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gtk_9slice_unref (slice);
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slice = NULL;
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}
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}
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return slice;
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}
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static gdouble
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unit_parse_str (const gchar *str,
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gchar **end_str)
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@ -2740,36 +2722,18 @@ border_parse_str (const gchar *str,
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return border;
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}
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static GtkBorder *
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border_parse (const gchar *str)
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{
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GtkBorder *border;
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gchar *end;
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border = border_parse_str (str, &end);
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if (*end != '\0')
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{
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g_message ("Error parsing border \"%s\", stopped at char %ld : '%c'",
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str, end - str, *end);
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if (border)
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gtk_border_free (border);
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return NULL;
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}
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return border;
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}
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static gboolean
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css_provider_parse_value (GtkCssProvider *css_provider,
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const gchar *value_str,
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GValue *value)
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GValue *value,
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GError **error)
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{
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GtkCssProviderPrivate *priv;
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GType type;
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gboolean parsed = TRUE;
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gchar *end = NULL;
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priv = css_provider->priv;
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type = G_VALUE_TYPE (value);
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if (type == GDK_TYPE_RGBA ||
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@ -2788,7 +2752,7 @@ css_provider_parse_value (GtkCssProvider *css_provider,
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{
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GtkSymbolicColor *symbolic_color;
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symbolic_color = symbolic_color_parse (value_str);
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symbolic_color = symbolic_color_parse_str (value_str, &end);
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if (!symbolic_color)
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return FALSE;
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@ -2843,14 +2807,14 @@ css_provider_parse_value (GtkCssProvider *css_provider,
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{
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GtkBorder *border;
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border = border_parse (value_str);
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border = border_parse_str (value_str, &end);
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g_value_take_boxed (value, border);
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}
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else if (type == CAIRO_GOBJECT_TYPE_PATTERN)
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{
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GtkGradient *gradient;
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gradient = gradient_parse (value_str);
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gradient = gradient_parse_str (value_str, &end);
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if (gradient)
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{
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@ -2863,7 +2827,8 @@ css_provider_parse_value (GtkCssProvider *css_provider,
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gchar *path;
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GdkPixbuf *pixbuf;
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path = path_parse (css_provider, value_str);
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g_clear_error (error);
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path = path_parse_str (css_provider, value_str, &end, error);
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if (path)
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{
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@ -2979,7 +2944,7 @@ css_provider_parse_value (GtkCssProvider *css_provider,
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{
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Gtk9Slice *slice;
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slice = slice_parse (css_provider, value_str);
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slice = slice_parse_str (css_provider, value_str, &end, error);
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if (slice)
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g_value_take_boxed (value, slice);
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@ -2992,12 +2957,103 @@ css_provider_parse_value (GtkCssProvider *css_provider,
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parsed = FALSE;
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}
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if (end && *end)
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{
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/* Set error position in the scanner
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* according to what we've parsed so far
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*/
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priv->value_pos += (end - value_str);
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if (error && !*error)
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g_set_error_literal (error,
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gtk_css_provider_error_quark (),
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CSS_PROVIDER_PARSE_ERROR,
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"Failed to parse value");
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}
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return parsed;
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}
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static void
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scanner_report_warning (GtkCssProvider *css_provider,
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GTokenType expected_token,
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GError *error)
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{
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GtkCssProviderPrivate *priv;
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const gchar *line_end, *line_start;
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const gchar *expected_str;
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gchar buf[2], *line, *str;
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guint pos;
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priv = css_provider->priv;
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if (error)
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str = g_strdup (error->message);
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else
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{
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if (priv->scanner->user_data)
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expected_str = priv->scanner->user_data;
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else
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{
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switch (expected_token)
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{
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case G_TOKEN_SYMBOL:
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expected_str = "Symbol";
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case G_TOKEN_IDENTIFIER:
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expected_str = "Identifier";
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default:
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buf[0] = expected_token;
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buf[1] = '\0';
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expected_str = buf;
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}
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}
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str = g_strdup_printf ("Parse error, expecting a %s '%s'",
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(expected_str != buf) ? "valid" : "",
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expected_str);
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}
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if (priv->value_pos)
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line_start = priv->value_pos - 1;
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else
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line_start = priv->scanner->text - 1;
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while (*line_start != '\n' &&
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line_start != priv->buffer)
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line_start--;
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if (*line_start == '\n')
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line_start++;
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if (priv->value_pos)
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pos = priv->value_pos - line_start + 1;
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else
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pos = priv->scanner->text - line_start - 1;
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line_end = strchr (line_start, '\n');
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if (line_end)
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line = g_strndup (line_start, (line_end - line_start));
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else
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line = g_strdup (line_start);
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g_message ("CSS: %s\n"
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"%s, line %d, char %d:\n"
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"%*c %s\n"
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"%*c ^",
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str, priv->scanner->input_name,
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priv->scanner->line, priv->scanner->position,
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3, ' ', line,
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3 + pos, ' ');
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g_free (line);
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g_free (str);
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}
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static GTokenType
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parse_rule (GtkCssProvider *css_provider,
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GScanner *scanner)
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GScanner *scanner,
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GError **error)
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{
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GtkCssProviderPrivate *priv;
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GTokenType expected_token;
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@ -3024,20 +3080,29 @@ parse_rule (GtkCssProvider *css_provider,
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g_scanner_get_next_token (scanner);
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if (scanner->token != G_TOKEN_IDENTIFIER)
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{
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scanner->user_data = "Color name";
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return G_TOKEN_IDENTIFIER;
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}
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color_name = g_strdup (scanner->value.v_identifier);
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css_provider_push_scope (css_provider, SCOPE_VALUE);
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g_scanner_get_next_token (scanner);
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if (scanner->token != G_TOKEN_IDENTIFIER)
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{
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scanner->user_data = "Color definition";
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return G_TOKEN_IDENTIFIER;
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}
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color_str = g_strstrip (scanner->value.v_identifier);
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color = symbolic_color_parse (color_str);
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color = symbolic_color_parse (color_str, error);
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if (!color)
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{
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scanner->user_data = "Color definition";
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return G_TOKEN_IDENTIFIER;
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}
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g_hash_table_insert (priv->symbolic_colors, color_name, color);
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@ -3053,9 +3118,8 @@ parse_rule (GtkCssProvider *css_provider,
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{
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GScanner *scanner_backup;
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GSList *state_backup;
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GError *error = NULL;
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gboolean loaded;
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gchar *path;
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gchar *path = NULL;
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css_provider_push_scope (css_provider, SCOPE_VALUE);
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g_scanner_get_next_token (scanner);
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@ -3063,15 +3127,18 @@ parse_rule (GtkCssProvider *css_provider,
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if (scanner->token == G_TOKEN_IDENTIFIER &&
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g_str_has_prefix (scanner->value.v_identifier, "url"))
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path = path_parse (css_provider,
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g_strstrip (scanner->value.v_identifier));
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g_strstrip (scanner->value.v_identifier),
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error);
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else if (scanner->token == G_TOKEN_STRING)
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path = path_parse (css_provider,
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g_strstrip (scanner->value.v_string));
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else
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return G_TOKEN_IDENTIFIER;
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g_strstrip (scanner->value.v_string),
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error);
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if (path == NULL)
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{
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scanner->user_data = "File URL";
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return G_TOKEN_IDENTIFIER;
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}
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|
||||
css_provider_pop_scope (css_provider);
|
||||
g_scanner_get_next_token (scanner);
|
||||
@ -3091,7 +3158,7 @@ parse_rule (GtkCssProvider *css_provider,
|
||||
|
||||
/* FIXME: Avoid recursive importing */
|
||||
loaded = gtk_css_provider_load_from_path_internal (css_provider, path,
|
||||
FALSE, &error);
|
||||
FALSE, error);
|
||||
|
||||
/* Restore previous state */
|
||||
css_provider_reset_parser (css_provider);
|
||||
@ -3103,23 +3170,25 @@ parse_rule (GtkCssProvider *css_provider,
|
||||
|
||||
if (!loaded)
|
||||
{
|
||||
g_warning ("Error loading imported file \"%s\": %s",
|
||||
path, (error) ? error->message : "");
|
||||
g_error_free (error);
|
||||
scanner->user_data = "File URL";
|
||||
return G_TOKEN_IDENTIFIER;
|
||||
}
|
||||
else
|
||||
return G_TOKEN_NONE;
|
||||
}
|
||||
else
|
||||
{
|
||||
scanner->user_data = "Directive";
|
||||
return G_TOKEN_IDENTIFIER;
|
||||
}
|
||||
}
|
||||
|
||||
expected_token = parse_selector (css_provider, scanner, &selector);
|
||||
|
||||
if (expected_token != G_TOKEN_NONE)
|
||||
{
|
||||
selector_path_unref (selector);
|
||||
scanner->user_data = "Selector";
|
||||
return expected_token;
|
||||
}
|
||||
|
||||
@ -3134,6 +3203,7 @@ parse_rule (GtkCssProvider *css_provider,
|
||||
if (expected_token != G_TOKEN_NONE)
|
||||
{
|
||||
selector_path_unref (selector);
|
||||
scanner->user_data = "Selector";
|
||||
return expected_token;
|
||||
}
|
||||
|
||||
@ -3151,10 +3221,9 @@ parse_rule (GtkCssProvider *css_provider,
|
||||
|
||||
while (scanner->token == G_TOKEN_IDENTIFIER)
|
||||
{
|
||||
const gchar *value_str = NULL;
|
||||
gchar *value_str = NULL;
|
||||
GtkStylePropertyParser parse_func = NULL;
|
||||
GParamSpec *pspec;
|
||||
GError *error = NULL;
|
||||
gchar *prop;
|
||||
|
||||
prop = g_strdup (scanner->value.v_identifier);
|
||||
@ -3166,16 +3235,21 @@ parse_rule (GtkCssProvider *css_provider,
|
||||
return ':';
|
||||
}
|
||||
|
||||
priv->value_pos = priv->scanner->text;
|
||||
|
||||
css_provider_push_scope (css_provider, SCOPE_VALUE);
|
||||
g_scanner_get_next_token (scanner);
|
||||
|
||||
if (scanner->token != G_TOKEN_IDENTIFIER)
|
||||
{
|
||||
g_free (prop);
|
||||
scanner->user_data = "Property value";
|
||||
return G_TOKEN_IDENTIFIER;
|
||||
}
|
||||
|
||||
value_str = g_strstrip (scanner->value.v_identifier);
|
||||
value_str = scanner->value.v_identifier;
|
||||
SKIP_SPACES (value_str);
|
||||
g_strchomp (value_str);
|
||||
|
||||
if (gtk_style_properties_lookup_property (prop, &parse_func, &pspec))
|
||||
{
|
||||
@ -3197,21 +3271,16 @@ parse_rule (GtkCssProvider *css_provider,
|
||||
g_value_set_string (val, value_str);
|
||||
g_hash_table_insert (priv->cur_properties, prop, val);
|
||||
}
|
||||
else if ((parse_func && (parse_func) (value_str, val, &error)) ||
|
||||
(!parse_func && css_provider_parse_value (css_provider, value_str, val)))
|
||||
else if ((parse_func && (parse_func) (value_str, val, error)) ||
|
||||
(!parse_func && css_provider_parse_value (css_provider, value_str, val, error)))
|
||||
g_hash_table_insert (priv->cur_properties, prop, val);
|
||||
else
|
||||
{
|
||||
if (error)
|
||||
{
|
||||
g_message ("Error parsing property value: %s\n", error->message);
|
||||
g_error_free (error);
|
||||
}
|
||||
|
||||
g_value_unset (val);
|
||||
g_slice_free (GValue, val);
|
||||
g_free (prop);
|
||||
|
||||
scanner->user_data = "Property value";
|
||||
return G_TOKEN_IDENTIFIER;
|
||||
}
|
||||
}
|
||||
@ -3246,19 +3315,6 @@ parse_rule (GtkCssProvider *css_provider,
|
||||
return G_TOKEN_NONE;
|
||||
}
|
||||
|
||||
static void
|
||||
scanner_msg (GScanner *scanner,
|
||||
gchar *message,
|
||||
gboolean is_error)
|
||||
{
|
||||
GError **error = scanner->user_data;
|
||||
|
||||
g_set_error_literal (error,
|
||||
GTK_CSS_PROVIDER_ERROR,
|
||||
GTK_CSS_PROVIDER_ERROR_FAILED,
|
||||
message);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
parse_stylesheet (GtkCssProvider *css_provider,
|
||||
GError **error)
|
||||
@ -3271,29 +3327,14 @@ parse_stylesheet (GtkCssProvider *css_provider,
|
||||
while (!g_scanner_eof (priv->scanner))
|
||||
{
|
||||
GTokenType expected_token;
|
||||
GError *err = NULL;
|
||||
|
||||
css_provider_reset_parser (css_provider);
|
||||
expected_token = parse_rule (css_provider, priv->scanner);
|
||||
expected_token = parse_rule (css_provider, priv->scanner, &err);
|
||||
|
||||
if (expected_token != G_TOKEN_NONE)
|
||||
{
|
||||
if (error != NULL)
|
||||
{
|
||||
priv->scanner->msg_handler = scanner_msg;
|
||||
priv->scanner->user_data = error;
|
||||
}
|
||||
|
||||
g_scanner_unexp_token (priv->scanner, expected_token,
|
||||
NULL, NULL, NULL,
|
||||
"Error parsing style resource", FALSE);
|
||||
|
||||
if (error != NULL)
|
||||
{
|
||||
priv->scanner->msg_handler = NULL;
|
||||
priv->scanner->user_data = NULL;
|
||||
|
||||
return FALSE;
|
||||
}
|
||||
scanner_report_warning (css_provider, expected_token, err);
|
||||
|
||||
while (!g_scanner_eof (priv->scanner) &&
|
||||
priv->scanner->token != G_TOKEN_RIGHT_CURLY)
|
||||
@ -3302,6 +3343,7 @@ parse_stylesheet (GtkCssProvider *css_provider,
|
||||
else
|
||||
css_provider_commit (css_provider);
|
||||
|
||||
g_clear_error (&err);
|
||||
g_scanner_get_next_token (priv->scanner);
|
||||
}
|
||||
|
||||
@ -3340,10 +3382,12 @@ gtk_css_provider_load_from_data (GtkCssProvider *css_provider,
|
||||
g_ptr_array_remove_range (priv->selectors_info, 0, priv->selectors_info->len);
|
||||
|
||||
priv->scanner->input_name = "-";
|
||||
priv->buffer = data;
|
||||
g_scanner_input_text (priv->scanner, data, (guint) length);
|
||||
|
||||
g_free (priv->filename);
|
||||
priv->filename = NULL;
|
||||
priv->buffer = NULL;
|
||||
|
||||
return parse_stylesheet (css_provider, error);
|
||||
}
|
||||
@ -3390,10 +3434,12 @@ gtk_css_provider_load_from_file (GtkCssProvider *css_provider,
|
||||
priv->filename = g_file_get_path (file);
|
||||
|
||||
priv->scanner->input_name = priv->filename;
|
||||
priv->buffer = data;
|
||||
g_scanner_input_text (priv->scanner, data, (guint) length);
|
||||
|
||||
ret = parse_stylesheet (css_provider, error);
|
||||
|
||||
priv->buffer = NULL;
|
||||
g_free (data);
|
||||
|
||||
return ret;
|
||||
@ -3438,10 +3484,12 @@ gtk_css_provider_load_from_path_internal (GtkCssProvider *css_provider,
|
||||
}
|
||||
|
||||
priv->scanner->input_name = priv->filename;
|
||||
priv->buffer = data;
|
||||
g_scanner_input_text (priv->scanner, data, (guint) length);
|
||||
|
||||
ret = parse_stylesheet (css_provider, error);
|
||||
|
||||
priv->buffer = NULL;
|
||||
g_mapped_file_unref (mapped_file);
|
||||
|
||||
return ret;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user